---
title: Fabric Warehouse Data Store
description: Fabric Warehouse Data Store generates a Stage and a Store layer for Fabric Warehouse as T-SQL notebooks with a notebook load control.
---

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3. [Fabric Warehouse](https://knowledge.bigenius-x.com/generators?hsLang=en#fabric-warehouse)

# Fabric Warehouse Data Store

**Applies to**  
Platform: Fabric Warehouse  
Architecture: Data Store

Fabric Warehouse Data Store generates a Stage and a Store layer for Fabric Warehouse as T-SQL notebooks with a notebook load control. Select the Generator Configuration `Fabric Warehouse DataStore` when you add a project whose Data Store runs in a Fabric Warehouse. This article lists what the configuration supports and where it differs from [Microsoft SQL Server Data Store](https://knowledge.bigenius-x.com/microsoft-sql-server-data-store?hsLang=en).

### Scope and output

- Platform: Microsoft Fabric Warehouse. The configuration is available since Generator 2.0.
- Layers: Source, Stage and Store. Dataflow Modeling shows Stage and the Data Store in the Bronze column. See [Understand the Layering concept](https://knowledge.bigenius-x.com/understand-the-layering-concept?hsLang=en).
- Output: T-SQL deployment notebooks, a deployment pipeline definition and Python load control notebooks, described in [Fabric Warehouse - Artifacts](https://knowledge.bigenius-x.com/fabric-warehouse-artifacts?hsLang=en).

### Prerequisites

- A Fabric workspace with a warehouse for the target layers. The deployment notebooks switch to the existing warehouse with `USE` and create missing schemas; they create no warehouse.
- A lakehouse for the load control execution log. The load control deployment notebook creates the log as a Delta table there.
- An Azure Key Vault with the tenant ID, client ID and client secret of a service principal. The load control notebook uses them to connect to the warehouse.

A setup example is in [Fabric Warehouse - Target environment](https://knowledge.bigenius-x.com/fabric-warehouse-target-environment?hsLang=en). The placeholders for the warehouse, schema, lakehouse, Key Vault and secret names are listed in [Fabric Warehouse - Placeholder values](https://knowledge.bigenius-x.com/fabric-warehouse-placeholder-values?hsLang=en).

### Sources and linked projects

Stage source views read each source table by its three-part name `[<database>].[<schema>].[<table>]`. The source system has the type `Microsoft Fabric Warehouse`, and its database and schema names are placeholders that you fill in when you replace the placeholders. The supported discovery types are listed in [Source systems per generator configuration](https://knowledge.bigenius-x.com/source-systems-per-generator-configuration?hsLang=en).

You can [import a linked project](https://knowledge.bigenius-x.com/import-a-project-to-be-used-as-a-linked-project?hsLang=en) as a source and [export this project as a linked project](https://knowledge.bigenius-x.com/export-a-project-to-be-used-as-linked-project?hsLang=en).

### Supported model objects

- [Source](https://knowledge.bigenius-x.com/source?hsLang=en)
- [Stage](https://knowledge.bigenius-x.com/stage?hsLang=en)
- [Store Entity](https://knowledge.bigenius-x.com/store-entity?hsLang=en)
- [Store Composite](https://knowledge.bigenius-x.com/store-composite?hsLang=en)

[Implementation Type](https://knowledge.bigenius-x.com/implementation-type-model-object?hsLang=en) offers these values:

- Stage: `Cached` (default) or `Virtual`
- Store Entity: `Permanent`
- Store Composite: `Virtual` (default) or `Cached`

### Capabilities and limitations

- Keys: a Store Entity has no hash key and no surrogate key. Its primary key is the business key; a historized Store Entity adds `BG_ValidFromTimestamp` in front. Keys are created as `NONCLUSTERED` and `NOT ENFORCED`.
- Change detection: [Delta Detection](https://knowledge.bigenius-x.com/delta-detection-model-object?hsLang=en) on the Store Entity sets how rows are compared. The default `Hash Value Comparison` compares `BG_RowHashScd1` and `BG_RowHashScd2`.
- Delete detection: [Configure delete detection](https://knowledge.bigenius-x.com/configure-a-delete-detection-behavior?hsLang=en) adds the column `BG_IsDeleted` and a delete detection table, view and loader.
- Data quality: Store Entity supports [data quality rules](https://knowledge.bigenius-x.com/understand-data-quality-rules-overview?hsLang=en).
- Indexes: index management is not available, and the generated tables have no indexes.
- Validity: with the default Persist Validity on, historized tables have a `BG_ValidToTimestamp` column.
- Deployment: a deployment notebook holds at most the number of objects set in [Notebook Deployment Objects Limit](https://knowledge.bigenius-x.com/notebook-deployment-objects-limit-project?hsLang=en); further objects go to the next notebook. The pipeline definition runs the load control deployment first, then the deployment notebooks in order. See [Fabric Warehouse - Deployment](https://knowledge.bigenius-x.com/fabric-warehouse-deployment?hsLang=en).
- Loading: [LoadControl Options](https://knowledge.bigenius-x.com/loadcontrol-options-project?hsLang=en) offers only `Multi-Threading Notebook`, a Python notebook that runs the loaders in dependency order. See [Fabric Warehouse - Load data - Native Load Control](https://knowledge.bigenius-x.com/fabric-warehouse-load-data-native-load-control?hsLang=en).
- Data types: validation reports warning `ID-35000` when the length, precision or scale of a term does not fit its Fabric Warehouse data type. Warning `ID-35001` flags a business key term of type `varchar(max)` or `varbinary(max)`, because constraints on it could block the deployment.

### Project properties

The configuration offers these project properties, with their defaults:

- [Hash Algorithm](https://knowledge.bigenius-x.com/hash-algorithm-project?hsLang=en): `SHA1`; also `SHA2_256` and `MD5`
- [Hash Casing](https://knowledge.bigenius-x.com/hash-casing-project?hsLang=en): `None`; also `Upper` and `Lower`
- [Hash Concatenation Separator](https://knowledge.bigenius-x.com/hash-concatenation-separator-project?hsLang=en): `_`
- [Hash Null Placeholder](https://knowledge.bigenius-x.com/hash-null-placeholder-project?hsLang=en): `_NULL_`
- [Hash Trim](https://knowledge.bigenius-x.com/hash-trim-project?hsLang=en): off
- [Begin of Universe](https://knowledge.bigenius-x.com/begin-of-universe-project?hsLang=en): `19000101`
- [End of Universe](https://knowledge.bigenius-x.com/end-of-universe-project?hsLang=en): `99991231`
- [Persist Validity](https://knowledge.bigenius-x.com/persist-validity-project?hsLang=en): on
- [Create Result Views](https://knowledge.bigenius-x.com/create-result-views-project?hsLang=en): on
- [Configure LoadControl](https://knowledge.bigenius-x.com/configure-loadcontrol-project?hsLang=en): on
- [Deploy LoadControl](https://knowledge.bigenius-x.com/deploy-loadcontrol-project?hsLang=en): on
- [LoadControl Options](https://knowledge.bigenius-x.com/loadcontrol-options-project?hsLang=en): `Multi-Threading Notebook`
- [Notebook Deployment Objects Limit](https://knowledge.bigenius-x.com/notebook-deployment-objects-limit-project?hsLang=en): `100`
- [Deployment Options](https://knowledge.bigenius-x.com/deployment-options-project?hsLang=en): `Generate Drop Table Statements`

### Platform differences

The table compares the configuration with Microsoft SQL Server Data Store of the same release:

| Item | Fabric Warehouse | Microsoft SQL Server |
| --- | --- | --- |
| Timestamp Default Terms | `datetime2(6)` | `datetimeoffset` |
| Hash Default Terms | `varbinary(20)` | `binary(20)` |
| Text Default Terms | `varchar` | `nvarchar` |
| Primary keys | nonclustered, not enforced | clustered |
| Persist Validity default | on | off |
| Index management | not available | available |
| Artifact Output Mode | not available | available |
| Target Object Comment Type | not available | available |

LoadControl Options offers `Multi-Threading Notebook` on Fabric Warehouse and `Native Load Control` or `Airflow` on Microsoft SQL Server. Notebook Deployment Objects Limit exists only on Fabric Warehouse.

These Default Terms belong to each group:

- Timestamps: `BG_LoadTimestamp`, `BG_UpdateTimestamp`, `BG_ValidFromTimestamp`, `BG_ValidToTimestamp`, `BG_EffectiveTimestamp`
- Row hashes: `BG_RowHash`, `BG_RowHashScd1`, `BG_RowHashScd2`
- Text, same lengths on both platforms: `BG_SourceSystem`, `BG_DataflowName`, `BG_DataflowSetName`, `BG_ErrorDescription`, `BG_IncrementLoadStatus`

### Example

A Store Entity `dd_deletedset_scd_0_1_2` with the business key term `CUSTOMER_ID` has SCD1 and SCD2 terms and delete detection. It generates this table. The excerpt shows the example schema `store` in place of the placeholder, leaves out seven columns and adds line breaks:

```
CREATE TABLE [store].[DS_SE_dd_deletedset_scd_0_1_2] (
     [BG_LoadTimestamp] DATETIME2(6) NOT NULL
    ,[BG_UpdateTimestamp] DATETIME2(6) NOT NULL
    ,[BG_SourceSystem] VARCHAR(255) NULL
    ,[BG_ValidFromTimestamp] DATETIME2(6) NOT NULL
    ,[BG_ValidToTimestamp] DATETIME2(6) NULL
    ,[BG_IsDeleted] BIT NOT NULL
    ,[BG_RowHashScd1] VARBINARY(20) NOT NULL
    ,[BG_RowHashScd2] VARBINARY(20) NOT NULL
    ,[CUSTOMER_ID] INT NOT NULL
    ,[CUSTOMER] VARCHAR(100) NOT NULL
    ,[CUSTOMER_TYPE] VARCHAR(100) NOT NULL
)
;
ALTER TABLE [store].[DS_SE_dd_deletedset_scd_0_1_2]
    ADD CONSTRAINT [PK_DS_SE_dd_deletedset_scd_0_1_2]
    PRIMARY KEY NONCLUSTERED ([BG_ValidFromTimestamp], [CUSTOMER_ID])
    NOT ENFORCED;
```

The table holds every version of a customer; the primary key starts with `BG_ValidFromTimestamp`. With Microsoft SQL Server Data Store, the same table has no `BG_ValidToTimestamp` column, and its primary key is clustered.

### Release differences

Project Settings shows the Generator Version of your project.

- Generator 2.0: first release of the configuration.
- Generator 2.2: the project properties Persist Validity, Create Result Views, Hash Casing, Hash Concatenation Separator, Hash Null Placeholder and Hash Trim; the model object properties Increment Management Type on Stage, and [Delete Detection Partial Terms](https://knowledge.bigenius-x.com/delete-detection-partial-terms-model-object?hsLang=en) and [Delete Detection Partial Operator](https://knowledge.bigenius-x.com/delete-detection-partial-operator-model-object?hsLang=en) on Store Entity; the validation warnings `ID-35000` and `ID-35001`.

### Related articles

- Previous: 
    - Fabric Warehouse: [Target environment](https://knowledge.bigenius-x.com/fabric-warehouse-target-environment?hsLang=en)
- Next: [Generate artifacts](https://knowledge.bigenius-x.com/generate-artifacts?hsLang=en), [Replace the placeholders in the artifacts](https://knowledge.bigenius-x.com/replace-the-placeholders-in-the-artifacts?hsLang=en) 
    - Fabric Warehouse: [Artifacts](https://knowledge.bigenius-x.com/fabric-warehouse-artifacts?hsLang=en), [Deployment](https://knowledge.bigenius-x.com/fabric-warehouse-deployment?hsLang=en), [Load data - Native Load Control](https://knowledge.bigenius-x.com/fabric-warehouse-load-data-native-load-control?hsLang=en)
- Reference: [Delta Detection (Model Object)](https://knowledge.bigenius-x.com/delta-detection-model-object?hsLang=en), [Delete Detection Method (Model Object)](https://knowledge.bigenius-x.com/delete-detection-method-model-object?hsLang=en), [Hash Algorithm (Project)](https://knowledge.bigenius-x.com/hash-algorithm-project?hsLang=en), [LoadControl Options (Project)](https://knowledge.bigenius-x.com/loadcontrol-options-project?hsLang=en), [Notebook Deployment Objects Limit (Project)](https://knowledge.bigenius-x.com/notebook-deployment-objects-limit-project?hsLang=en), [Deployment Options (Project)](https://knowledge.bigenius-x.com/deployment-options-project?hsLang=en) 
    - Fabric Warehouse: [Placeholder values](https://knowledge.bigenius-x.com/fabric-warehouse-placeholder-values?hsLang=en)
- See also: [Available Generator Configurations](https://knowledge.bigenius-x.com/available-generator-configurations?hsLang=en), [Understand the Generator Configuration](https://knowledge.bigenius-x.com/understand-the-generator-configuration?hsLang=en), [Source systems per generator configuration](https://knowledge.bigenius-x.com/source-systems-per-generator-configuration?hsLang=en), [Use Linked Projects](https://knowledge.bigenius-x.com/use-linked-projects?hsLang=en), [Microsoft SQL Server Data Store](https://knowledge.bigenius-x.com/microsoft-sql-server-data-store?hsLang=en) 
    - Fabric Warehouse: [Stage](https://knowledge.bigenius-x.com/fabric-warehouse-stage?hsLang=en), [Data Vault](https://knowledge.bigenius-x.com/fabric-warehouse-data-vault?hsLang=en), [Dimensional](https://knowledge.bigenius-x.com/fabric-warehouse-dimensional?hsLang=en), [Data Mart](https://knowledge.bigenius-x.com/fabric-warehouse-data-mart?hsLang=en)

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